h. Removal of the Main Board Assembly
The main board disassembly procedure refers to the view of figure 8-5 & 8-10.
•
Remove the front bezel (6.2.1.a)
•
Remove the upper cover assembly (6.2.1.b)
•
Remove the front frame assembly (6.2.1.c)
•
Remove the processor board (6.2.1.d)
•
Remove the power supply (6.2.1.e)
•
Remove the upper shield (6.2.1.f)
•
Remove three M3x6 screws that secure the main board to the lower cover.
•
Remove twelve M3X6 screws that secure the main board to the lower cover
The main board can now be removed from the oscilloscope.
6.2.2 Assembly Procedure
Reassemble the unit in the reverse order, check that all screws shown on the
drawings in section 8 are used and properly torqued.
Verify that all cables are correctly connected.
Assembly Note :
•
Bezel :
The plastic bezel should be in contact with the CRT all around the screen
area. The bezel should not be deformed. When reassembling unit, if glass on
inside of bezel must be cleaned use lint free wipes and while again wearing a lab
coat and gloves try to polish off any marks, as a last resort use glass cleaner. If
any fingerprints are present on LCD display, it may be possible to clean with
alcohol and a lint free wipe, however sometimes it is impossible to clean it
completely. If dust is present it may be possible to blow it off using particle free
compressed air however this may cause more dust to be drawn to the LCD face.
•
LCD Display
: Being careful not to damage the LCD face. Fingerprints may be
impossible to clean off.
•
Fan
: Check the fan cable direction. Note the air flow, the fan extracts air from the
unit and expels it.
•
Feet
: Check that the lower feet and rear feet are aligned and properly tightened
before re-assembly.
•
Filter
: Check that the earth wire is correctly installed and tightened.
•
Floppy
: Adjust the floppy position to obtain the front face tangential to face of the
front panel. Check that the door is moving freely and shuts correctly.
Insert a floppy and eject it to check the mechanism.
Maintenance
6-5
Summary of Contents for LC564DL
Page 12: ...x Table of Contents ...
Page 18: ...2 4 General Information ...
Page 46: ...4 22 Theory of Operation 4 6 2 Power Supply Block Diagram ...
Page 59: ...Performance Verification 5 13 ...
Page 70: ...5 24 Performance Verification ...
Page 95: ...Performance Verification 5 49 ...
Page 115: ...Performance Verification 5 69 ...
Page 122: ...5 76 Performance Verification Figure 5 14 1MΩ Ω Ω Ω Rise time Equipment Setup ...
Page 148: ...6 14 Maintenance 6 6 4 Fan Problem ...
Page 149: ...6 6 5 Power Supply Voltages Problem Maintenance 6 15 ...
Page 150: ...6 16 Maintenance 6 6 6 Display Problem ...
Page 151: ...6 6 7 Front Panel Controls Do not Operate Maintenance 6 17 ...
Page 152: ...6 18 Maintenance 6 6 8 Remote Control GPIB or RS232 Problem ...
Page 153: ...6 6 9 Performance Verification Fails Maintenance 6 19 ...
Page 154: ...6 20 Maintenance 6 6 10 Floppy Disk Drive Problem ...
Page 155: ...6 6 11 Graphic Printer Problem Maintenance 6 21 ...
Page 156: ...6 22 Maintenance 6 6 12 Centronics Problem ...
Page 157: ...6 6 13 Hard Disk Drive Problem Maintenance 6 23 ...
Page 158: ...6 24 Maintenance ...
Page 181: ...Mechanical Parts 8 1 8 Mechanical Parts Figure 8 1 LC564DL Cabinet ...
Page 182: ...8 2 Mechanical Parts Figure 8 2 LC564DL Chassis Assembly ...
Page 184: ...8 4 Mechanical Parts Figure 8 3 Power Supply Installation ...
Page 185: ...Mechanical Parts 8 5 Figure 8 4 Lower Cover Assembly ...
Page 187: ...Mechanical Parts 8 7 Figure 8 5 Lower Cover Assembly with CKTRIG Option ...
Page 188: ...8 8 Mechanical Parts Figure 8 6 Lower Cover ...
Page 190: ...8 10 Mechanical Parts Figure 8 7 CKTRIG Option ...
Page 191: ...Mechanical Parts 8 11 Figure 8 8 Rear Panel Assembly ...
Page 193: ...Mechanical Parts 8 13 Figure 8 9 900079 Main Board Assembly ...
Page 194: ...8 14 Mechanical Parts Figure 8 10 900079 Main Board Assembly ...
Page 196: ...8 16 Mechanical Parts Figure 8 11 Upper Shield Assembly ...
Page 197: ...Mechanical Parts 8 17 Figure 8 12 Front Frame Assembly ...
Page 199: ...Mechanical Parts 8 19 Figure 8 13 Keypad Assembly ...
Page 200: ...8 20 Mechanical Parts Figure 8 14 Fan Assembly ...
Page 202: ...8 22 Mechanical Parts Figure 8 15 Graphic Printer Assembly ...
Page 203: ...Mechanical Parts 8 23 Figure 8 16 Upper Cover Assembly ...
Page 205: ...Mechanical Parts 8 25 Figure 8 17 Hard Disk Assembly ...
Page 206: ...8 26 Mechanical Parts Figure 8 18 Centronics VGA Interface Assembly ...
Page 207: ...Mechanical Parts 8 27 Figure 8 19 Floppy Disk Assembly ...
Page 209: ...Mechanical Parts 8 29 Figure 8 20 LC564DL Dimensions ...
Page 210: ...8 30 Mechanical Parts Figure 8 21 LC564DL Packaging ...